Canker sores are small lesions that form in the inside of the mouth, lips, cheeks, throat, and even the tongue.

What are canker sores?

Canker sores, (also known as aphthous ulcers or aphthous stomatitis), are small wounds that form in the inside of the mouth, lips, cheeks, throat, and even the tongue. Despite their appearance, canker sores shouldn’t be confused with cold sores or fever blisters, which are associated with the herpes simplex virus. Canker sores may appear as one or develop in clusters. They are not contagious and often heal without treatment between 7-14 days.

How I know that I am suffering from canker sores?

If you have irritation or saltiness or acidity inside of your mouth then it should not be ignored as on examination you may catch hold of the sight of these small blisters with redness on the periphery and yellow and white center inside the mouth.

Are canker sores life threatening or contagious disease?

They are not life threatening nor are they contagious and often heal without treatment between 7-14 days.

What are the Common symptoms of canker sores?

Some of the common symptoms of canker sores are tingling or burning sensation near the affected area, fever, swollen lymph glands and sluggishness.

The Size:

Canker sores are round in shape and can vary in size, ranging from about 1/4 inch (or 6 millimeters) to 1 inch (or 25 millimeters) .

The Color:

Canker sores swell in size and eventually burst, leaving behind a white or yellow appearance with a red border.

The Feeling:

While it takes close to two weeks for a canker sore to fully heal, pain is a definite symptom. Often, the worst of it is experienced during the first 3-4 days of its development. A tingling or burning sensation almost always occurs.

Uncommon Symptoms:

In some cases, people may experience a fever, swollen lymph nodes, fatigue, and/or feel under the weather.

What are the Main causes of canker sores?

Main reasons behind the development of canker sores are low immune system, poor diet, a mouth trauma, excessive stress, some kind of food allergy, and vitamin deficiencies. It has also been found that women are more likely to suffer from canker sores as compared to men.


Even though canker sores aren’t contagious, in some cases, it is believed that the condition can be passed along the family tree.

Poor Diet and Nutritional Deficiencies:

When a person doesn’t get enough folic acid, vitamin B12, and iron in their diet, they run the risk of developing canker sores. Food allergies have also been known to trigger the sores.

Weak Immune System:

Those who experience numerous canker sore outbreaks may suffer from a weakened immune system. Paying a visit to the doctor is recommended.

Mouth Injuries:

If you bite the inside of your lip or brush too hard, you’re asking for trouble in the oral department. The inside of the mouth is rather delicate and any damage can set off the development of a canker sore.

Emotional Stress:

It is believed that stress causes canker sores in a handful of people.


Although canker sores can strike anyone, it seems that younger individuals in their teens and early twenties get them the most.


On the average, women are two times more likely to suffer from canker sores than men. This may have something to do with their menstrual cycles, where the start of their period has been known to trigger canker sore activity.

What are the various home remedies of the canker sores?

Though your doctor may prescribe you a steroid for treating the canker sores but they don’t need any treatment and disappear after a week or so. Although you can try some of the home treatment for getting comfort from the pain and irritation.

Below are a few home remedies for a canker sore to consider when you wish to avoid the use of over-the-counter drugs:

Homemade Rinses

An effective home remedy for canker sore rinses use ingredients, such as hydrogen peroxide, salt, and baking soda. Individuals may find relief when combining 2 ounces of hydrogen peroxide with 2 ounces of water.

Another canker sore home remedy mixes 4 ounces of water mixed with 1 teaspoon of salt and 1 teaspoon of baking soda.

Black Tea

Even doctors agree with placing wet black tea bags on canker sores to ease pain. Astringent called tannin is contained within the tea, which reduces discomfort.


You can create a pure myrrh tincture, which is dabbed on canker sores once every hour. This great natural home remedy for a canker sore may also treat mouth and tongue ulcers.

Carbamide peroxide

This home remedy will release oxygen that will clean up the bacteria that initiates that canker sore. The peroxide bubbles get into the smallest crevices of the sore, while the glycerine coats and protects the affected area.


Yogurt is a good option that contains the ingredient.

Potassium chlorate

The patient just combines a teaspoon of the potassium chlorate with a cup of water and gargles with it several times each day. This should not be swallowed, just swished around in the mouth and then spat out.

Baking Soda

Mix in a teaspoon of baking soda with some warm water and rinse in your mouth several times a day. The pain should go away within 24 hours.

Plum Juice

Use 1-2 tablespoons of plum juice as a mouth wash and rinse with it for 2-3 minutes.

Canker Sores Home Remedies

Canker Sores Home Remedies


Putt some alum on your lip where the sore is located and it should quickly relieve the pain.


The first step in this remedy is drying the canker sore with a cotton swab. The other end of the swab would be used to apply the orabase to the top of the sore.

Tea Tree Oil

Mix 10% tea tree oil with 90% water and rinse in your mouth once or twice a day. Tea tree oil is well known as being a great skin disinfectant.


Place a piece of sorrel up against your sore until it becomes wet and soggy.

Salt Water

Mix a tablespoon of salt in with some warm water and rinse several times throughout the day. Salt is well known for its ability to dry up a canker sore.


Take a chunk of raw onion and hold it against the infected sore for a few minutes.

Milk of magnesia or Mylanta

They both have antibacterial effects.

Copper Sulfate

Copper Sulfate is known as an astringent. Be prepared, it will burn for a moment once you apply it, but as a canker sore treatment, it flat out works. The sore should disappear within two days at most.


You can take sage and make it into a tea. Use the tea as a mouthwash and rinse your mouth with it several times per day.